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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_SPDY_BUFFERED_SPDY_FRAMER_H_
#define NET_SPDY_BUFFERED_SPDY_FRAMER_H_
#pragma once
#include "base/basictypes.h"
#include "base/gtest_prod_util.h"
#include "base/memory/linked_ptr.h"
#include "base/memory/scoped_ptr.h"
#include "net/base/net_export.h"
#include "net/spdy/spdy_framer.h"
#include "net/spdy/spdy_protocol.h"
namespace spdy {
class NET_EXPORT_PRIVATE BufferedSpdyFramerVisitorInterface
: public SpdyFramerVisitorInterface {
public:
BufferedSpdyFramerVisitorInterface() {}
virtual ~BufferedSpdyFramerVisitorInterface() {}
// Called after all the header data for SYN_STREAM control frame is received.
virtual void OnSyn(const SpdySynStreamControlFrame& frame,
const linked_ptr<SpdyHeaderBlock>& headers) = 0;
// Called after all the header data for SYN_REPLY control frame is received.
virtual void OnSynReply(const SpdySynReplyControlFrame& frame,
const linked_ptr<SpdyHeaderBlock>& headers) = 0;
// Called after all the header data for HEADERS control frame is received.
virtual void OnHeaders(const SpdyHeadersControlFrame& frame,
const linked_ptr<SpdyHeaderBlock>& headers) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(BufferedSpdyFramerVisitorInterface);
};
class NET_EXPORT_PRIVATE BufferedSpdyFramer {
public:
BufferedSpdyFramer();
virtual ~BufferedSpdyFramer();
// Sets callbacks to be called from the buffered spdy framer. A visitor must
// be set, or else the framer will likely crash. It is acceptable for the
// visitor to do nothing. If this is called multiple times, only the last
// visitor will be used.
void set_visitor(BufferedSpdyFramerVisitorInterface* visitor);
void OnControl(const SpdyControlFrame* frame);
bool OnControlFrameHeaderData(const SpdyControlFrame* control_frame,
const char* header_data,
size_t len);
void OnDataFrameHeader(const SpdyDataFrame* frame);
// spdy_framer_ methods.
size_t ProcessInput(const char* data, size_t len);
void Reset();
SpdyFramer::SpdyError error_code() const;
SpdyFramer::SpdyState state() const;
SpdySynStreamControlFrame* CreateSynStream(SpdyStreamId stream_id,
SpdyStreamId associated_stream_id,
int priority,
SpdyControlFlags flags,
bool compressed,
const SpdyHeaderBlock* headers);
SpdySynReplyControlFrame* CreateSynReply(SpdyStreamId stream_id,
SpdyControlFlags flags,
bool compressed,
const SpdyHeaderBlock* headers);
SpdyHeadersControlFrame* CreateHeaders(SpdyStreamId stream_id,
SpdyControlFlags flags,
bool compressed,
const SpdyHeaderBlock* headers);
SpdyDataFrame* CreateDataFrame(SpdyStreamId stream_id,
const char* data,
uint32 len,
SpdyDataFlags flags);
SpdyFrame* CompressFrame(const SpdyFrame& frame);
bool IsCompressible(const SpdyFrame& frame) const;
private:
// The size of the header_buffer_.
enum { kHeaderBufferSize = 32 * 1024 };
void InitHeaderStreaming(const SpdyControlFrame* frame);
SpdyFramer spdy_framer_;
BufferedSpdyFramerVisitorInterface* visitor_;
// Header block streaming state:
char header_buffer_[kHeaderBufferSize];
size_t header_buffer_used_;
bool header_buffer_valid_;
SpdyStreamId header_stream_id_;
DISALLOW_COPY_AND_ASSIGN(BufferedSpdyFramer);
};
} // namespace spdy
#endif // NET_SPDY_BUFFERED_SPDY_FRAMER_H_
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